Improvement in pbess boxeds tor an oil press



JOHN SHINN, OF LEVERINGTON, PHILADELPHIA, PENNSYLVANIA ASSIGNOR TO HIMSELF AND GEORGE S. RHODES.

Lefarg Pam No. 63.951, dared April li6, 1867.

IMPROVEMENT IN PRESS BOARDS POR AN OIL PRESS,

TO ALL WIIOM IT MAY CONCERN:

Be it known that I, JOHN SIIINN, of Leverington, in the twenty-tiret ward of' the city of Philadelphia, and the State of Pennsylvania, have invented a new and useful Improvement in Press Boards for an Oiil Press; and I do hereby declare that the following is aV full, clear, and exact description thereof, reference being made to the accompanying dra-wings, and the letters of reference marked thereon. r

The nature of my invention consists in constructing press boards for oil presses, of wood or metal, with aseries of grooves running longitudinally across the board or plate, and covering these grooves with a Wire screenJ the object of which is to expedite the tlow of' oil impressing.

'I o enable others skilled in the arts to make and operate my improvement, will ,new describe its 'construction and operation by l'otereiice to the drawings. i

Dis a top view of one of the boards, When-made of wood. C is a. sectional edge view of the same. The body ofthe board can be made of soft wood, (whiteor yellow pine.) The strips a Z1 c should be made'f hard wood, (maple or beech,) and should be about three-eighths of an inch square. and must be nailed across the board parallel to each other, about three-eighths of an inch apart. The under part of the board should bel perfectly smooth. When the plates are made of iron they should be constructed as follows: B represents a secl tional edge view of the plate, which is of the usual thickness. Across this plate are iron rods parallel to each other, about three-eighths of an inch apart, and riveted tomthe plate at each end. These rods should he about three-eighths of an inch in diameter. A represents one of the rods, `tiled flat at each end in order that the 'hole may be drilled or punched more readily, it being also easier to rivet, the flat part being the top. E represents thewire screen. It should be woven of No. 18 iron Wire, and tive meshes to the inch, andinot" quite so large a surface as the wooden or iron plate.

The operation is as follows: The lard, or other substance to be pressed, is put into bags in the usual way,l

the wireserecn is placed upon the strips or rods, and the bags containing the lard are then placed on the screen; then another boa-rdis placed upon the top of the bag with the grooves upward; a screen is then placed upon it, and then a bag, as before described, and so on-untl the press is t'ull. 'lhen the pressure is applied, and the Wire screen will prevent.` the bugs holding the lard or blubber from swelling into and clicking up the grooves. By means of the screeuthere is a more rapid How of oil with less pressure. v

Modifications may be made in my improvemenhsuch as radiating the grooves from the centre, thereby causing a flow of oil from all sides of the plate.'V

I claim a press board orlplate formed withv grooves running parallel or otherwise, in combination with a.

wire screen, as described, for the purpose set forth.

JOHN sHINN.

Witnesses:

EDW. HAVERSTIGH, A. P. DoUGLAss 

